Stent device for a prosthetic heart valve
AssigneeT-Heart SAS
InventorsAlain Dibie, Soad El Ghazouani
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AssigneeT-Heart SAS
InventorsAlain Dibie, Soad El Ghazouani
Estimating the term…
Replacing a defective atrioventricular heart valve, in particular a tricuspid valve, may include stent devices, prosthetic heart valves, delivery systems, and corresponding methods, which provide an improved fixation without distortion of the native anatomy. A stent device for a prosthetic heart valve has an axially extending mesh-shaped body, configured to fit an orifice and defining an inner channel as a passageway from a proximal to a distal end. At least three outer support arms extend from the distal end of the body towards the proximal end. Each support arm has a distal end first support region and a proximal end second support region. The second support region extends radially outwards in the deployed state. Each support arm has a flexible region between the first and second support regions, which is formed as an axially tapered section of the support arm and/or each support arm is tapered towards the proximal end.
Stent device (10) for a prosthetic heart valve, comprising:
Stent device (10) according to any of the preceding claims, wherein the body (12) comprises an essentially tubular or cylindrical shape.
Stent device (10) according to any of the preceding claims, wherein each support arm (18) is formed as a closed loop.
Stent device (10) according to any of the preceding claims, wherein each support arm (18) is linked to the body (12) via at least one linking arm (36) formed by a curvature of the first support region (20).
Stent device (10) according to any of the preceding claims, comprising an uneven number of support arms (18), preferably 5, 7, or 9 support arms (18), or a multitude/multiple of two and/or three support arms (18), said support arms (18) being adapted to a tricuspid valve or mitral valve.
Stent device (10) according to any of the preceding claims, wherein the circumferential spacing between the support arms (18) is asymmetric or symmetric and/or is adapted to a tricuspid valve or mitral valve.
Stent device (10) according to any of the preceding claims, wherein the mesh shape of the body (12) comprises a droplet shape, a diamond shape, or an essentially oval shape.
Stent device (10) according to any of the preceding claims, wherein the mesh-shape of the body (12) is formed by a lattice of a plurality of diamond-shaped cells (14) that are directly connected to each other or are connected via struts (13), said cells (14) preferably being essentially equal in size and/or shape.
Stent device (10) according to any of the preceding claims, wherein a portion (38) of the proximal end (16) of the body (12) extends radially outwards.
Stent device (10) according to any of the preceding claims, wherein the body (12) and the plurality of support arms (18) are formed as a single piece and/or as a wire frame.
Stent device (10) according to any of the preceding claims, wherein the body (12) or the passageway defined by the body (12) comprises an inner diameter between 29 mm and 36 mm, preferably about 30 mm or about 35 mm.
Stent device (10) according to any of the preceding claims, wherein at least the second support region (22) of the supporting arms (18) and/or the proximal end (16) of the outer body (12) are covered with a foil of a liquid impermeable or semi-impermeable material so as to form a cuff between the support arms (18) and the body (12) and/or between the support arms (18).
Stent device (10) according to any of the preceding claims, wherein the body (12) comprises at least two or at least three fixation means or windows (40) for receiving a valve assembly or wherein the cells of the mesh-shaped body (12) are configured for receiving and fixation of a valve assembly.
Prosthetic heart valve, comprising a stent device (10) according to any of the preceding claims and a valve assembly arranged within the inner channel (15) and/or at a proximal (16) or distal end (17) of the body (12) and being secured to the body (12) by means of fixation means or windows (40) or direct fixation to one or more cells of the mesh-shaped body (12).
Delivery system, comprising the stent device according to any of the preceding claims in a collapsed state.
Dependencies are inferred from the claim text.